Cutter-head for battery-spacer-making machines



1. w. B'UCKHART.

cumn mu rommgey SPACER MAKING MACHINES.

' APPLICATION FILED JUL 1711920. Patented Feb. 22, 1921.

2 sh ns- HEET 1.

4. w.- BUCKHA-RT CUTTER HEAD FOR BATTERY' SPACER MAKING MACHINES.

. APPLICATION FILED :JULYI17, 1920.

9L 1.! 2 Hu bT er Fm M2 m UNITED STATES JAMES w. BUCKHART, OF sAN FRANCISCO, CALIFORNIA, ASSIGN'OR TO PORT ORFORD PATENT OFFICE,

CEDAR SEPARATOB COMPANY, OF sAN FRANCISCO, CALIFORNIA, A CORPORATION OF EVADA.

CUTTER-HEAD FOR BATTERY-SFAGER-MAKING MACHINES.

Specificationof Letters Patent,

Patented Feb. 22; 1921.

Application filed July 17, 1920. Serial No. 397,020.

To all whom it may concern Beit known that I, JAMns W. BUCKHART, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented certain new and useful 1m rovements in Cutter-Heads for Battery-bpacer-Making Machines, of which the following is a specification.

The present invention relates to a particular form of rotary cutter designed primarily for trlmmmg, grooving and surfaclng in a single operation a strip or sheet of fibrous material, particularlyv wood, for forming therefrom a separator or spacer primarily used in electric storage batteries.

The principal'object of this invention is to provide a rotary cutter head at spaced points about its periphery with cutting units consisting of spaced grooving cutters arranged with their cutting points in alinement and having associated at opposite ends of the line means for sawing and trimming the side edges of the article operated on enabling the material to be simultaneously cut a given width, and provided with a plurality of parallel even spaced grooves.

A further object of the invention is to provide a cutter head having means for finishi the head and the trimmer knives and saws ter knives;

. companying drawings, and set forth in the claims hereto appended, it being understood also adjustably spaced transversely of the head enabling the spacers to be formed of different width and having different width that various changes in the form, proportion, size and minor details of construction withinthe scope of the claims may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention. V y

To more fully comprehend the invention reference is directed to the accompanying drawings, wherein:

Figure 1 is a view'in end cutter head disclosing the preferred embodi ment of my invention.

Fig. 2 is a view in side elevation of one of the cutters removed from'the'head.

Fig. 3 is a view in perspective of a portion of one of the cutters acting on the material elevation of a and forming a battery spacer therefrom, and

Fig. 4; is a sectional view takenon the line 4 4 of Fig. 2.

Referring more particularly to the several views of the drawings wherein like characters of reference designate corresponding parts, the numeral 1 indicates one of the side supports for a rotatably mounted head 2 illustrated as cylindrical in form and provided with a plurality of longitudinally disposed T-head slots 3' opening radially.

of the head 2 and arranged in parallel spaced relation. The head 2 between said T-head slots 3 is provided with one or more longitudinal channels 4 also Opening radi-' ally of the head. a A Within each of the T-head channels 3 is adapted to be removably positioned cutter members for the hereinafter described pur-. pose and formed and arranged inthehereinafter described manner. The cutter membersbeing arranged inbattery form as illustrated at A Fig. 2 of the drawings, consist of a mounting rod 5 preferably rectangular in cross section, and WhlC-h mounts alternately the grooving cutters 6 and spacers The spacers 7 are each formed with a slot similar to the slot 7 of the cutters 6, and

the spacers for the non-cutting or operating space between adjacent grooving cutters en-' able, on the rotation of the'head 2, the formation within a surface'movable relative to the head 2 of a plurality of parallel spaced grooves. At the ends of the series of al ternating grooving cutters and spacers 7 is positioned over the rod 5 a suitable mounting block 11 carrying a T-head 12 for projecting in the T end of the respective slots 3, and at a pointpreferably midway of the length of the series of cutters and spacers 7, one of the spacers vis provided with a T- head projection 13 for reception within the T-head slot 3 of the cutter head 2. Thus it willbe apparent that on the insertion of the cutter battery A within one of the re' cesses in the head 2 that the heads 12 of the mounting members and the head 13 of the center spacer will serve as an anchoring medium for the battery and precludes the same from radial movement from the head 2. At a point preferably in contact with the outer surface of each member 11 are removably mounted on the'rod 5 trim" mer saw members 14, the teeth 15 of which are adapted to project slightly below the end surface 8 of the grooving cutters 6 whereby the same will assist in severing and trim ming the opposite side edges of the sheet of material simultaneously with the grooving thereof. To further assist in the trimming-of the opposite edges of the material grooved there is detachably mounted on the rod 5 adjacent the outer face of each saw 14, a trimmer knife 16, said knives being provided at their lower forward edge with a point 17 formed by forwardly extending the lower portion of the front wall 18 thereof at an angle as at 19, and downwardly and forwardly inclining the lower wall 20, the point of the respective trimmer knives at opposite ends of the battery extending a "slight distance beyond and below the points 10 of the grooving cutters, whereby the points 17 will, on the rotation of the head, out entirely through the relatively thin material worked on, and in connection with the saws 14 will provide asmooth, trimmed edge for the same. The members 6, 7, 11,

14 and 16are-rem'o'vably mounted and'held in their position on the rod 5 bytheadvjustment' of the clamping nuts 21 associated 50 l with oppositeends of the rod. The formation of a cutter battery of a plurality of removable, units enables the arrangement of the parts in such manner as to provide grooves to be formed in the material worked on,- at different spaced parallel intervals and alsoenables the arrangement of the parts to form battery spacers of different widths.

To anchorthe battery of cutters 7 within the respective Thead slots 3, suitable an-Q choring screws 22 are passed through parallel openings 23 in the members 11, and are threaded into the body portionof the head 2, as in Fig. 1 of the drawings; Toflsurface and finish the material as the same is being trimmed and grooved, a surfacing knife or blade 24 is disposed in each i dinally of the head 2, withtheir cutting edge disposed in a plane slightly closer to the axis of rotation 25 of the head 2 than the plane of the points 10 of the grooving cutters 6, the difference in projection of the points 10 beyond the cutting edge of the blade providing the depth of the slots or grooves as formed in the material. The knives 24 are held in their respectiverecesses by blocks 26 secured in position'by retaining screws 27 or other suitable means.

By observing Fig. 3, the operation of one of the batteries A on'the material-is as fol lows The cutter battery moving in the direction of the arrow Fig. 3 and overlying an endless conveyor 28 moving in the direction of its arrow,'Fig. 3, and which carries 'a surfacing strip 29, mounts on said strip 29, a thin sheet of wood 30 approximately one-twelfth of an inch in thickness. The movement ofthe battery A and conveyer 28 in opposite directions causes the points 17 of the trimmer knives 16 and the teeth 15 of the trimmer saws 14 to trim excess material beyond a given width from the sides of the sheet 30 providing a member of a predetermined width. The points 10 of the grooving cutters 6, owing to the high speed of the head 2, form parallel grooves 31 in the upper surface of the member 30, and the cutting edge of the surfacing knives 24 plane or finish the upper surface of the; member 30 so that on the member 30 passing completely beneath the cutter head, the same is 1. A cutter for battery spacer makihgmachines, the same consisting of a rotating head; a plurality of cutters arranged in pan allel relation at spaced intervals about said head and each consisting of a plurality; of

spaced grooving cutter knives arranged in rows and disposed to extend radially of the head with their cutting edges in the same plane relative 'to the axis of rotation of the loo head, a trimmer knife disposed at each end of the-respective rows of grooving cutter knives and arranged with their cutting edges" in the same plane'and projected slightly beyond the plane of the grooving cutter.

knives, a trimmer saw associated with each trimmer knife and a surfacing "knife associ'-' .ated with said head between each row of cutter-sand disposed with its cutting edge in a plane closer to the axis of rotation of said head than the plane of the cutting edges of said grooving cutter knives; v r

2. A cutter for the described purpose comprising a support, a plurality of spaced grooving cutters removably mounted thereon and each consisting of a relatively flat plate provided with a cutting point at one lower corner, said points being arranged in alinement longitudinally of the support, a removable spacer associated with the support between each plate, a trimmer knife arranged at the opposite ends of the series of grooving cutters and each consisting of a relatively flat plate pro vided with a cutting point at one lower corner, said points projecting beyond the points of'said grooving cutters, a trimmer saw removably carried by said support adjacent the inner face of each trimmer knife and disposed with their teeth projecting below the lower edge of said knives, and means for detachably securing said elements to said support.

3. A cutter for the described purpose comprising a supporting rod, a plurality of spaced grooving cutters arranged in a row and removably mounted thereon and each consisting of a relatively thin flat plate provided with an opening for receiving the support and provided with a cutting point at one lower corner, said plates being arranged V on said support with said points in spaced parallel alinement, a spacer plate removably mounted on said support between each grooving cutter, a trimmer knife detachably mounted on said rod at opposite ends of said row of grooving cutters, and means for forcing said members together on said supporting rod to clamp the same thereon.

4. A cutter for the described purpose comprising a battery of spaced grooving cutters arranged in a row with their cutting edges in alinement, a pair of trimmer knives and saws arranged on the opposite ends of said row of cutters, a support for mounting said prising a cutter head provided in its surface with an interlocking slot, cutter members for detachably mountlng on' SELld head through longitudinal movement in said slot,

the same comprising a plurality of relatively flat slotted plates provided at one corner with acutting point and adapted for arrangement in alinement with the cutting points of the other plates, a supporting rod extending through the slots in said plates, means associated with said rod for clamping the plates together, and means passing radially through certain of said plates for engaging said cutter head to prevent longitudinal movement of the secured series of cutter plates longitudinally of their associated interlocking grooves.

6. A cutter for battery spacer making machines, the same consisting of a rotating head, a plurality of cutters arranged in parallel relation at spaced intervals about said head and each consisting of a plurality of spaced grooving cutter knives arranged in rows and disposed to extend radially of the head with their cutting edges in the-same plane relative to the axis of rotation of the head, a plurality of trimmer knives arranged with their cutting edges in the same plane and projecting slightly beyond the name to this specification.

JAMES W. BUCKHART. 

